Expandable bookshelf



FIG. 1 is a perspective view of the expandable bookshelf;

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevation view from what shall be referred to as the frontof the expandable bookshelf;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an elevation view from what shall be referred to as the rearof the expandable bookshelf; and,

FIG. 6 is an elevation view from either side of the expandablebookshelf.

The ornamental design for an expandable bookshelf, as shown anddescribed.